Highlights: Drinkware Type: Mugs Feature: Stocked Feature: Eco-Friendly Type: Coffee Mugs Material: Stainless Steel Style: Fashion, Creative Type: Coffee, Milk, Water, Fruit Juice, Others Capacity: 400ml Powered by: 2 x AAA battery Suitable for: Camping, Home, and Traveling Material: Stainless Steel, PP Color: Red, Green, Black, Blue Product Size: 8.8 x 14.3 x 11.7 cm / 3.46 x 5.62 x 4.52 inches Product Description: Easy and Convenient Operation Easy Operation While this coffee mug looks great on any kitchen counter board and coffee table, its essence is to make work easier. Press the self-stirring button on the mug and the propeller at the bottom will spin into action, mixing the solute and solvent particles into a lovely froth. No sweat, no hassle, just a product that makes stirring beverages much easier!